<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>canvas特效</title>
    <link rel="stylesheet" href="css/index.css">
</head>
<body>
<canvas id="box" style="background: black"></canvas>
<script src="js/index.js"></script>
<div>大家好</div>
</body>